"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : GUC
Case Name   : 使用alter system set方式修改max_active_global_temporary_table为10
Create At   : 2021/3/15
Owner       : opentestcase001
Description :
    1、修改max_active_global_temporary_table为10
    2、查询
    3、创建全局临时表
    4、清理环境
Expect      :
    1、设置成功
    2、结果为10
    3、成功
    4、成功
History     :modified by opentestcase005,2022.09.13，参数类型变更，修改参数设置方式
"""

import os
import unittest

from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class GucTestCase(unittest.TestCase):
    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.constant = Constant()
        self.comsh = CommonSH('PrimaryDbUser')
        self.common = Common()
        self.table = 't_globaltemptab0002'
        self.default_value = self.common.show_param(
            'max_active_global_temporary_table')

    def test_guc(self):
        text = '--step1:修改max_active_global_temporary_table为10;expect:设置成功'
        self.log.info(text)
        alter_cmd = self.comsh.execut_db_sql(
            'alter system set max_active_global_temporary_table=10;')
        self.assertTrue(alter_cmd)
        self.comsh.restart_db_cluster()
        status = self.comsh.get_db_cluster_status()
        self.assertTrue("Normal" in status or 'Degraded' in status,
                        '执行失败' + text)

        text = '--step2:查询;expect:结果为10--'
        self.log.info(text)
        sql_cmd = self.common.show_param('max_active_global_temporary_table')
        self.log.info(sql_cmd)
        self.assertEqual('10', sql_cmd, '执行失败' + text)

        text = '--step3:创建全局临时表;expect:成功--'
        self.log.info(text)
        sql_cmd = f'''drop table if exists {self.table};
            create global temp table {self.table}(c_int int);
            insert into {self.table} values(1),(2);
            update {self.table} set c_int = 5 where c_int = 1;
            delete from {self.table} where c_int = 2;
            select * from {self.table};
            '''
        result = self.comsh.execut_db_sql(sql_cmd)
        self.log.info(result)
        self.assertNotIn(self.constant.SQL_WRONG_MSG[1], result, '执行失败' + text)
        self.assertIn(self.constant.TABLE_CREATE_SUCCESS, result,
                      '执行失败' + text)
        self.assertIn(self.constant.DELETE_SUCCESS_MSG, result,
                      '执行失败' + text)

    def tearDown(self):
        text = '--step4:清理环境;expect:成功--'
        self.log.info(text)
        clear_cmd = self.comsh.execut_db_sql(
            f'drop table if exists {self.table};')
        self.log.info(clear_cmd)
        alter_cmd = self.comsh.execut_db_sql(
            f'alter system set max_active_global_temporary_table='
            f'{self.default_value};')
        self.log.info(alter_cmd)
        self.comsh.restart_db_cluster()
        status = self.comsh.get_db_cluster_status()
        self.assertTrue("Normal" in status or 'Degraded' in status,
                        '执行失败' + text)
        self.assertIn(self.constant.TABLE_DROP_SUCCESS, clear_cmd)
        self.log.info(f'-----{os.path.basename(__file__)} end-----')
